Nine planets remedies mantra and daan

To neutrilise nine planets bad effects their mantra and daan is highly recommended there may be given conditions.
1.When any person is passing through melefic planets mahadasha.
2. When any person is passing through melefic planets antardasha.
3.When any planet is melefic in Varsha Kundali.
4.When any planet is not favourable in transit or gochar.

Mantra associated with each planet is given with daan.It ia advised to do daan and mantra japa on the

day which is associated with the planets.Mantra is to be chanted 4 times the given number of japa.It is

best to chant the mantra and do havan in any shiva temple with vedic mantras.sandalwood mala or